Index-glass for lubricators.



P. W. EDWARDS.

INDEX GLASS FOR LUBRIGATORS.

APPLIGATION FILED JAN. zo, 1909.

e Patented Mar. 29, 1910.

fyfl. Q 6

I FRANK W. EDWARDS, OF LOGANSPGR-T, NLIANA, ASSIGNOR T0 THE GHICAG LUBR- CATOR COMPANY, Ol? CHXCAGO, LLNGS, A CORPGRATIQN F ILLINOS.

INDEX- GLASS FOR LUBRCATQRS.

953,5?5. Specification 0f Le 61's Patent irai-sented 29, i940.

rginal application filed August 24, 1908, Serial No. 450,096. ivided and this application filed January 20, 1909. Serial No. 473,390.

l ter of the index glass and its appurtenances l and showing the details of the construction thereof. Figs. 3, 4 and 5 are respectively a cross-section, elevation and a longitudinal section of a packing-case for the glass. Fig. 6 shows in end view, side elevation and longitudinal section one orp the preferred forms of the tubular observation-glass.

For illust-ration, and without thereby limiting the invention, l have shown a horizontally arranged cylindrical oilsbowl 1, upon which is arranged a condenser Q., which may be combined with the oil-bowl in any sui"- able way, or by screw-threaded nipple 3. The oil-bowl is provided with an attaching lug 4 which may be cast integral therewith. rlhe condenser is provided with a casting 5 containing a check-valve 6, a boiler connection and outlets to steam distributing pipes 8 and 9 which communicate with passages from the upper feed-arms leading, ter example, to the two engines and to the airbrake pump. riihe condenser is provided with a valve-opening 10 controlled by the valve 11, and entering the pipe 12 which extends to the bottom of the oil-bowl or the lowest available point therein to supply the necessary water oi condensation. rI he oilbowl is provided with a ller-valve 13 and a drain-valve 14.

All of the parts hereinabove described are of preferred construction, but may be varied within the scope of the invention.

rlhe observation-glass 15 is et two diamete s, the larger diameter being midway of its length. rlhis observation-glass may be made in a great variety ot forms, and combined 'with various mounting means, and iorms ot packing. rlhe glass, ot whatever it'orm, is provided with shoulders, grooves, flanges or other means whereby there is such coop ration of the glass and packingrings as to make itpossible to provide for the mounting of the glass in a tluid-tight manner.

rEhe packingcase 1G tor the glass as shown in Figs. 3, 4 and 5, has four more or less sight openings l? arranged in it, so as to be in line with the thicker portion or". the glass, and these sight openings are as large as To all whom it may concern.:

Be it known that l, FRANK W. EDWARDS, a citizen of the United States, residing at Logansport, in the county of Cass and State oi Indiana, have invented a certain new and useful improvement in ndex-Glasses `for Lubricators, of which the following is a t'ull, clear, and exact description.

rlhis invention relates to that class oi? machinery lubricators, commonly known as sight-feed condensation displacement lubricators, and the objectot the invention is to provide means for readily ascertaining the height ot the oil or other lubricant in the oilbowl.

ln carrying out the invention, l' utilize, with more or less modification, the novel construct-ion ot tubular reinforced sightteed glass and its mountings which term the subject of my application for patent for sight-feed condensation displacement lubricators, tiled August 24, 1008, Serial. No. 450,096, and the companion cases Serial Nos. 450,093 and 450,094, and this present case is a division or my aforesaid application Serial No. 450,096, upon requirement of the Patent Oliice.

The invention consists out an index-glass for lubricators, in which the glass has a through-bore and a thick-walled or rein- 'forced center, with ends constructed to receive packing-rings or gaskets, combined with a packing-case containing the glass and arranged between arms projecting trom the top and bottom of the oil-bowl and conimunicating with the interior of the oilbowl, there being check-valves arranged in the arms so as to automatically close communication between the oil-bowl and indexglass in the event of the derangeinent ot the glass or its appurtenances.

ln the accompanying drawings, illustrating the invention, in the several figures ci which like parts are similarly designated, Figure 1 is a vertical transverse section ot the preferred construction of sight-feed condensation displacement lubricator, having the index-glass oit the present application arranged at the i'ront. Fig. 2 is a v rtical section taken substantially through the cenpossible consistent with leaving enough metal between them to make the case strong enough to aid the glass in resisting internal pressure and protect the glass from external violence. lf desired, the )acking-ease may be provided, and is herein shown as provided, with the internal flange 18 for coperation with gaskets hereinafter` described. and by means of which the glass is adapted to be arranged fluid-tight in its casing and in connection with the supporting-arms projecting from the oil-bowl. There is an upper arm 19 and a lower supporting arm 2O arranged respectively in communication with the top and bottom of the oil-bowl. The lower arm 2O opens directly into the oilbowl. .ln the upper arm 19 is a check-Valve case 21 and a check-valve 22 seated in the inner reamed-out end thereof, with a detaining pin 23. r1`he case 21 is provided with the holes or ports 2ll adjacent to the Avalve seat, which admit pressure to the check-valve 22 and cause the pressure to equalize when the oil-bowl is full of oil or full of oil and water. rfhis upper arm 19 is also provided with a screw-cap to close it. The lower arm 2O is provided with a check-valve 26 arranged in the vertically-disposed combination capplug, guide and pocket 2'? having clearance ports 28. rilhese clearance ports enable the oil and water to circulate around the bottom of the check-valve, and such circulation permits the valve to equalize when the oil-bowl is full of oil and also admits pressure under the valve to seat it in case of the blowing out of a gasket on the index glass. The hub 29 depending from the upper arm 19 may be made integral therewith and the hub 30 on the lower supporting-arm 2O may also be made integral therewith. ln connection with the packing-case, there is a packingnut 31 having a tubular extension 32 adapted to enter the hub 30 on the lower supporting-arm, and connected therewith by any suitable steam-tight joint or packed joint 33. This packing-nut has a screwthreaded connection with the packing-case.

By the construction of observation-glass shown and described, the strength of the old bulls-eye form of glass is obtained in the exposed portion of greater diameter, and the shouldering of the glass ati'ords lodging places for packing, whereby the tightness of the packed joint is most efficiently secured. There are thus embodied in this form of glass all the advantages of the old tubular glass, in so far as facilities for watching the circulation are concerned, and all of the strength of the bulls-eye for resistance to external violence, and at the same time., the glass has strength superior to the tubular glass for resistance of internal pressure, and it is lighted up from as many as four (liderent points, so as to insure visibility of its contents. Moreover, the arrangement is such that while tight joints are eected, yet there is permitted the inevitable expansion and contraction due to variations in temperature, without endangering the glass.

The relation of the tubular portion of the packing-nut to its adjacent hub is suoli as to permit of the packing-nut being unscrewed from the packing-case and moved into the adjacent hub suiticiently far to clear the packing-case, and to permit it to be unscrewed from the other hub, so that the glass may be lifted out, and it or another put into place.

lllhe packing-rings or gaskets form cushions between the glass and the metal and thus serve to protect the glass from being chipped or crushed when the metal expands, and yet they are of suflicient elasticity to yield under contraction and maintain tight joints.

The cheek-valves 2e and 26 at top and bottom are in fact safety check-valves, which automatically seat in the case of a gasket being blown out, and thus preserve the integrity of the lubricator. rEhe lower check-valve 26 is shown in a vertical position, so that in case of the draining of the oil-bowl, said valve will drop from its seat and permit the contents of the index-glass to drain out at the oil-bowl drain, and then when refilling the oil-bowl, the valve is so arranged in this vertical position that the mere tlow of the oil will not raise the valve to its seat and thus prevent the oil from tilling into the index-glass at the same time that it fills into the oil-bowl. In other words, the fact that the valve remains away from its seat during this filling operation insures the flowing of the oil into the indexglass at the same time that it flows into the oil-bowl. The other check-valve 24 is arranged in a horizontal position so that the equalizing pressure coming up through the sight-feed glass does not have the weight of the valve against it, but merely nas to equalize against the check-valve as it is floated from its seat under the pressure within the bowl, and the index-glass and its connections, thus making a perfect balance at all times between the two check-valves and also affording an arrangement whereby the pressures will act directly against the checkvalves to seat them in case of an escape of pressure within the index-glass packing or any part of the connections.

The various movable and removable parts are shown as provided with hexagonal or other angular portions by which they may be engaged by a wrench.

What l claim is n a. lubricator, an oil-bowl, an arm projecting from tne upper portion of the oilbowl, an arm extending from the lower portion of the oil-bowl, an interposed indexn testimony whereof have hereunto set glass, a llorlzont-ally arranged automatlc i .my hand tlns elghteenth day or January w check-valve and its detachable ported case A. D. 1909.

arranged n said upper arm, and a vert- FRANK W. EDl/VARDS. cally arranged automatic oheelvalve in the ldltnessee:

lower arm and its ported Supporting and GEORGE M. DIGKSON,

guiding' cap-plug. l DAVID A. ECKERMAN.

It is herezy certiied thatl in Letters Patent No. 953,675, granted March 29, 1910, upon the application of Frank W. Edwards, of Logansport, Indiana, for an improvement in IndeX-Glasses for Lubricators, errors appear in the printed specication requiring correction as follows: Page l, line 64,'the Word or should read as; page 2, line 8, after the Word described the period should be stricken out and a comma inserted instead; and that the said Letters Patent be read with these corrections therein that the same may conform to the recoil/gaf the case in the Patent Oice.

Signed and Sealed this 12th day of April, A. D., 1910.

C. C. BILLINGS,

Acting ommz'ssz'oner of Patents.

[SEAL] 

